Across the world, 30.3 per cent of 15,000 cocaine users questioned for the 2018 Global Drug Survey said they would be able to get their hands on the drug within half an hour.
Only 16.5 per cent said they could get a pizza delivered in that time.
The report also found drug users in Scotland have been found to take more cocaine in a single session than anyone else in the world.
It said dealers were competing for customers not only through product quality but also speed of delivery, with easy access and higher purity “likely to lead to escalating use and harms among people.”
“With many cities covered with CCTV cameras, traditional street dealing is becoming less attractive to many suppliers and consumers,” it added.
“On the other hand, darknet markets allow drugs to be delivered through your letterbox and the rise of encrypted social media platforms makes ordering relatively safe.
“Thus, it’s not surprising that the next customer service upgrade was going to be the growth of sophisticated and rapid drug delivery services in many of our big cities.”